The Toronto Raptors have been fined for comments rap star and team ambassador Drake made about Kevin Durant at a recent concert that the NBA deemed a violation of its anti-tampering rules.

The fine is for $25,000, sources with knowledge of the league's ruling told ESPN.com on Monday.

Rapper Drake, the global ambassador for the Raptors, asked a Toronto crowd to show its support for Kevin Durant during a recent concert where the NBA MVP was in attendance. Rich Arden/ESPN Images

Durant, who attended Drake's show last week in Toronto, was the subject of what the league regarded as a public recruiting pitch from the famed Canadian artist, who was named the Raptors' global ambassador in September 2013.

"Before we leave, I just want to show one of my brothers something," Drake told the crowd. "You know, my brother Kevin Durant was kind enough to come to the show tonight and watch us. I just want him to see what would happen if he came to play in Toronto. Let him know what would happen."

The Oklahoma City Thunder star and reigning NBA MVP then received an ovation from the crowd, which reportedly launched into a "KD" chant.